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Toyota Prius

Fuel parameters

The Toyota Prius has 40 fuel parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Fuel level, volume PRIUS_FLI_VOLConfirmed

Pelican can show this parameter as the fuel tank level.

  • Request21 29
  • Service 21PID 29
  • Module7C0 → 7C8
  • Every5 s
  • Testing for 1997 to 2009, 2018, 2023 to 2026

Example reply from a 2022 Toyota Prius.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 × 500 ÷ 3785) = 0 gal

Formula
(val × 500 ÷ 3785)
Range
0 to 21 gal
Unit
gal

Confirmed for 2010 to 2017, 2019 to 2022. In testing for 1997 to 2000, 2002 to 2004, 2006, 2018. Not supported for 2001, 2005, 2007 to 2009, 2023 to 2026.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Engine fuel rate FUEL_RATESAE J1979Confirmed

Measured in units per hour

Pelican can show this parameter as the fuel rate.

  • Request01 5E
  • Service 01PID 5E
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 20)
Range
0 to 3212.75 L/h
Unit
L/h

Confirmed for 2026.

Engine fuel rate PRIUS_ENG_FUEL_RATE

  • Request22 F1 9D
  • Service 22DID F19D
  • Module700 → 708
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 50)
Range
0 to 1310.7 g/s
Unit
g/s

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel cut PRIUS_FUEL_CUTConfirmed

  • Request21 E6
  • Service 21PID E6
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 1997 to 2008, 2010 to 2026

Example reply from a 2009 Toyota Prius.

Bit 9 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2009. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2013, 2016, 2024 to 2025.

Fuel cut PRIUS_FUEL_CUT_7E0

  • Request21 37
  • Service 21PID 37
  • Module7E0 → 7E8
  • Every3600 s
  • Testing

Bit 121 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel cut time PRIUS_FUEL_CUT_TIME

  • Request21 52
  • Service 21PID 52
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bits 64 to 79 of the reply, 16 bits.

Formula
(val × 537 ÷ 512)
Range
0 to 68734.9511
Unit
Number

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel injection timing PRIUS_FUEL_INJ_TIMConfirmed

  • Request21 F3
  • Service 21PID F3
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 1997 to 2008, 2010 to 2026

Example reply from a 2009 Toyota Prius.

Bits 0 to 7 of the reply, 8 bits.

0x1B = 27 → (27 × 16 ÷ 125) = 3.456 ms

Formula
(val × 16 ÷ 125)
Range
0 to 32.64 ms
Unit
ms

Confirmed for 2009. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2013, 2016, 2024 to 2025.

Fuel level PRIUS_FLI

Pelican can show this parameter as the fuel tank level.

  • Request22 1F 2F
  • Service 22DID 1F2F
  • Module700 → 708
  • Every30 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 1997 to 2004, 2006, 2015, 2017 to 2018, 2020 to 2021, 2023, 2026. Not supported for 2005, 2007 to 2014, 2016, 2019, 2022, 2024 to 2025.

Fuel level, volume PRIUS_FLI_VOLConfirmed

Pelican can show this parameter as the fuel tank level.

  • Request21 29
  • Service 21PID 29
  • Module7C0 → 7C8
  • Every5 s
  • Testing for 1997 to 2009, 2018, 2023 to 2026

Example reply from a 2022 Toyota Prius.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 × 500 ÷ 3785) = 0 gal

Formula
(val × 500 ÷ 3785)
Range
0 to 21 gal
Unit
gal

Confirmed for 2010 to 2017, 2019 to 2022. In testing for 1997 to 2000, 2002 to 2004, 2006, 2018. Not supported for 2001, 2005, 2007 to 2009, 2023 to 2026.

Fuel pressure 1 PRIUS_FUEL_P_1

  • Request22 11 3C
  • Service 22DID 113C
  • Module700 → 708
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 50000 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 1 PRIUS_FUEL_P_1_700

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 2 PRIUS_FUEL_P_2

  • Request22 11 3C
  • Service 22DID 113C
  • Module700 → 708
  • Every1 s
  • Testing

Bits 16 to 31 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 50000 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 2 PRIUS_FUEL_P_2_700

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 16 to 31 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 3 PRIUS_FUEL_P_3

  • Request22 11 3C
  • Service 22DID 113C
  • Module700 → 708
  • Every1 s
  • Testing

Bits 32 to 47 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 50000 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 3 PRIUS_FUEL_P_3_700

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 32 to 47 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 4 PRIUS_FUEL_P_4

  • Request22 11 3C
  • Service 22DID 113C
  • Module700 → 708
  • Every1 s
  • Testing

Bits 48 to 63 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 50000 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 4 PRIUS_FUEL_P_4_700

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 48 to 63 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 5 PRIUS_FUEL_P_5

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 64 to 79 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pressure 6 PRIUS_FUEL_P_6

  • Request22 11 C4
  • Service 22DID 11C4
  • Module700 → 708
  • Every1 s
  • Testing

Bits 80 to 95 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 300 kPa
Unit
kPa

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel pump duty ratio PRIUS_FUEL_PUMP_DUTY_RATIOConfirmed

  • Request22 10 6A
  • Service 22DID 106A
  • Module700 → 708
  • Every1 s
  • Testing for 1997 to 2023, 2026

Example reply from a 2025 Toyota Prius.

Bits 0 to 15 of the reply, 16 bits.

0x01EC = 492 → (492 × 0.0609756098) = 30 kPa

Formula
(val × 0.0609756098)
Range
0 to 3996 kPa
Unit
kPa

Confirmed for 2024 to 2025. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016.

Fuel pump/speed status on PRIUS_FUEL_PMP_SPD_STAT_ON

  • Request21 39
  • Service 21PID 39
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bit 14 of the reply.

Formula
val
Range
0 to 1
Unit
Number

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel remaining PRIUS_FLVConfirmed

Pelican can show this parameter as the fuel tank level.

  • Request22 10 22
  • Service 22DID 1022
  • Module7C0 → 7C8
  • Every1 s
  • Testing for 1997 to 2022

Example reply from a 2026 Toyota Prius.

Bits 0 to 15 of the reply, 16 bits.

0x104B = 4171 → (4171 ÷ 100) = 41.71 L

Formula
(val ÷ 100)
Range
0 to 655 L
Unit
L

Confirmed for 2023 to 2026. In testing for 1997 to 2000, 2002 to 2004, 2006 to 2007, 2018. Not supported for 2001, 2005, 2008 to 2017, 2019 to 2022.

Fuel return temperature PRIUS_FUEL_RETURN_T

  • Request22 11 41
  • Service 22DID 1141
  • Module700 → 708
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel system 1 status FUELSYS1SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2008, 2010, 2012. Supported for 2005, 2007, 2009, 2011, 2013 to 2017, 2019 to 2026.

Fuel system 2 status FUELSYS2SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 8 to 15 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2008, 2010, 2012. Supported for 2005, 2007, 2009, 2011, 2013 to 2017, 2019 to 2026.

Fuel temperature 1 PRIUS_FUEL_T_1

  • Request22 11 3E
  • Service 22DID 113E
  • Module700 → 708
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 1 PRIUS_FUEL_T_1_700

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 2 PRIUS_FUEL_T_2

  • Request22 11 3E
  • Service 22DID 113E
  • Module700 → 708
  • Every5 s
  • Testing

Bits 8 to 15 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 2 PRIUS_FUEL_T_2_700

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 8 to 15 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 3 PRIUS_FUEL_T_3

  • Request22 11 3E
  • Service 22DID 113E
  • Module700 → 708
  • Every5 s
  • Testing

Bits 16 to 23 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 3 PRIUS_FUEL_T_3_700

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 16 to 23 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 4 PRIUS_FUEL_T_4

  • Request22 11 3E
  • Service 22DID 113E
  • Module700 → 708
  • Every5 s
  • Testing

Bits 24 to 31 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 4 PRIUS_FUEL_T_4_700

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 24 to 31 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 5 PRIUS_FUEL_T_5

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 32 to 39 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

Fuel temperature 6 PRIUS_FUEL_T_6

  • Request22 11 C5
  • Service 22DID 11C5
  • Module700 → 708
  • Every5 s
  • Testing

Bits 40 to 47 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

High fuel pressure, actual PRIUS_HFP_ACTUALConfirmed

  • Request22 1F 6D
  • Service 22DID 1F6D
  • Module700 → 708
  • Every1 s
  • Testing for 1997 to 2023, 2026

Example reply from a 2025 Toyota Prius.

Bits 24 to 39 of the reply, 16 bits.

0x026E = 622 → (622 × 10) = 6,220 kPa

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2024 to 2025. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016.

High fuel pressure, target PRIUS_HFP_TARGETConfirmed

  • Request22 1F 6D
  • Service 22DID 1F6D
  • Module700 → 708
  • Every1 s
  • Testing for 1997 to 2023, 2026

Example reply from a 2025 Toyota Prius.

Bits 8 to 23 of the reply, 16 bits.

0x0190 = 400 → (400 × 10) = 4,000 kPa

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2024 to 2025. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016.

Low fuel pressure PRIUS_LOW_FUEL_PRESSUREConfirmed

  • Request22 1F 6D
  • Service 22DID 1F6D
  • Module700 → 708
  • Every1 s
  • Testing for 1997 to 2023, 2026

Example reply from a 2025 Toyota Prius.

Bits 64 to 79 of the reply, 16 bits.

0x0025 = 37 → (37 × 10) = 370 kPa

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2024 to 2025. In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016.

Low fuel pressure sensor PRIUS_LFPConfirmed

  • Request22 10 CD
  • Service 22DID 10CD
  • Module700 → 708
  • Every1 s
  • Testing for 1997 to 2022

Example reply from a 2026 Toyota Prius.

Bits 0 to 15 of the reply, 16 bits.

0x8A85 = 35461 → (35461 ÷ 10 − 3276.8) = 269.3 kPa

Formula
(val ÷ 10 − 3276.8)
Range
0 to 1000 kPa
Unit
kPa

Confirmed for 2023 to 2026. In testing for 1997 to 2000, 2002 to 2004, 2006, 2018 to 2019. Not supported for 2001, 2005, 2007 to 2017, 2020 to 2022.

Target air-fuel equivalence ratio PRIUS_LAMBDA_TARGET

  • Request21 04
  • Service 21PID 04
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 1997 to 2008, 2010 to 2026

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1.99 ÷ 65535)
Range
0 to 1.99
Unit
Number

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Supported for 2009. Not supported for 2013, 2016, 2024 to 2025.

Vehicle fuel rate PRIUS_VEH_FUEL_RATE

  • Request22 F1 9D
  • Service 22DID F19D
  • Module700 → 708
  • Every1 s
  • Testing

Bits 16 to 31 of the reply, 16 bits.

Formula
(val ÷ 50)
Range
0 to 1310.7 g/s
Unit
g/s

In testing for 1997 to 2008, 2010 to 2012, 2014 to 2015, 2017 to 2023, 2026. Not supported for 2009, 2013, 2016, 2024 to 2025.

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